Dyestuffs containing a (benzenesulphonyl)-substituted sulphonamide first component and an indole first component

ABSTRACT

Disazo dyestuffs which in the form of the free acid correspond to the formula   IN WHICH R1 is aryl, a C1-C4-aliphatic radical or dialkylamino with 1-6 carbon atoms in the alkyl radical; R2 is chlorine, bromine, alkoxy, or alkyl; R3 and R4 are hydrogen, chlorine, bromine, alkoxy, or alkyl; R5 is alkyl or aryl; R6 is hydrogen, alkyl, or alkyl substituted by cyano, carbonamide or carboxyl; R7 is a substituent, such as alkyl, alkoxy, halogen, nitro, sulfo, or cyano; B is a 1,4-phenylene or 1,4-napthylene radical; M IS A NUMBER 0-2; AND N IS A NUMBER 0-2; AND THEIR USE FOR THE DYEING AND PRINTING OF NATURAL AND SYNTHETIC FIBER MATERIALS CONTAINING AMIDE GROUPS, FOR EXAMPLE THOSE OF WOOL, SILK AND POLYAMIDE, SUCH AS POLY- Epsilon CAPROLACTUM OR THE REACTION PRODUCT OF HEXAMETHYLENE-DIAMINE WITH ADIPIC ACID, ARE DISCLOSED. The dyeings obtained, especially those on polyamide materials, are distinguished by good fastness properties, especially by good fastness to wet porcessing and good fastness to light.

United States Patent [191 Sommer et al.

[4 Feb. 18, 1975 DYESTUFFS CONTAINING A (BENZENESULPHONYL)-SUBSTITUTED SULPHONAMIDE FIRST COMPONENT AND AN INDOLE FIRST COMPONENT [75] Inventors: Richard Sommer,

Leverkusen-Schlebusch; Gerhard Wolfrum, Bergisch-Neukirchen, both of Germany [73] Assignee: Bayer Aktiengesellschaft,

Leverkusen, Germany [22] Filed: Apr. 20, 1972 {21] Appl. No.: 245,923

[30] Foreign Application Priority Data Primary ExaminerLorraine A. Weinberger Assistant Examiner-C. F. Warren Attorney, Agent, or Firm-Allan R. Plumley [57] ABSTRACT Disazo dyestuffs which in the form of the free acid correspond to the formula so mun-so, -n,

in which R is aryl, a C -C -aliphatic radical or dialkylamino with l-6 carbon atoms in the alkyl radical;

R is chlorine, bromine, alkoxy, or alkyl;

R and R are hydrogen, chlorine, bromine, alkoxy.

or alkyl;

R is alkyl or aryl;

R is hydrogen, alkyl, or alkyl substituted by cyano,

carbonamide or carboxyl;

R is a substituent, such as alkyl, alkoxy, halogen,

nitro, sulfo, or cyano;

B is a 1,4-phenylene or l,4napthylene radical;

m is a number 0-2; and

n is a number 0-2;

and their use for the dyeing and printing of natural and synthetic fiber materials containing amide groups, for example those of wool, silk and polyamide, such as poly-e-caprolactum or the reaction product of hexamethylene-diamine with adipic acid. are disclosed. The dyeings obtained, especially those on polyamide materials, are distinguished by good fastness properties, especially by good fastness to wet porcessing and good fastness to light.

11 Claims, N0 Drawings DYESTUFFS CONTAINING A (BENZENESULPHONYL )-SUBSTITUTED SULPI-IONAMIDE FIRST COMPONENT AND AN INDOLE FIRST COMPONENT The subject of the present invention are new, valuable disazo dyestuffs which in the form of the free acid correspond to the general formula l -l= B- =N I N I a N SO --NH-SO -R as well as their manufacture and use for dyeing synthetic fibre materials, especially those from polyamides.

In the general Formula (I) R represents an aromatic radical or an aliphatic radical with l 4 C atoms or a dialkylamino group with l 6 C atoms in the alkyl radical,

R represents chlorine, bromine, an alkoxy group or an alkyl group,

R and R represent hydrogen, chlorine, bromine, an

alkoxy group or an alkyl group,

R represents an alkyl group which is not substituted further or an aryl group,

R represents hydrogen or an alkyl group which is optionally substituted by a nitrile, carbonamide or carboxyl group,

R,- represents a substituent, especially alkyl, alkoxy,

halogen, nitro, sulpho or nitrile,

B represents a 1,4-phenylene or l,4naphthylene radical,

m represents the numbers 0 2 and n represents the numbers 0 2.

The radicals R and R may each have the same or different meaning if it and/or m are different and n and m represent the number 2.

Suitable radicals B are, for example, radicals of the formulae and wherein R and R have the above-mentioned meaning. Preferred alkyl groups are those with l 4 C atoms. The alkyl and alkoxy groups can, unless otherwise stated, be substituted further, for example by nitrile, hydroxyl or optionally substituted phenyl. Suitable alkyl groups are, for example, -CH C H r,, --C H,, C4H9 and Preferred alkoxy groups are those with l 6 C atoms. Suitable alkoxy groups are, for example, OCH;,, OC2H5, -'OC3H7, OC4H9, and -OCH- ,C,;H;,.

Possible halogens are, in particular, Cl and Br. Suitable aromatic radicals R and aryl groups R are in particular phenyl radicals. The phenyl radicals can possess further substituents, for example C, C alkyl groups. C, C -alkoxy groups, halogen. nitrile. nitro and the like. Preferred phenyl radicals are phenyl and methylphenyl.

Suitable aliphatic radicals R are, in particular. the abovementioned C C -alkyl groups.

Suitable dialkylamino groups are, in particular. the dimethylamino or diethylamino group.

Preferred dyestuffs are those of the formula R R R R R R R in and n have the abovementioned meaning, and those of the formula wherein R,, R R R R m and n have the above-mentioned meaning. Particularly valuable dyestuffs are those of the formula wherein R R R R R R R and n have the abovementioned meaning, especially those of the formula SO -NH-SO -R wherein R, represents an aromatic radical or an aliphatic radical with l-4 C atoms,

R represents hydrogen, chlorine, bromine, an alkyl group with l-4 C atoms or an alkoxy group with l-4 C atoms,

R represents hydrogen, chlorine or a methyl, ethyl,

methoxy or ethoxy group,

R represents hydrogen or a methoxy, ethoxy,

methyl or ethyl group,

R represents alkyl with l-4 C atoms or phenyl,

R represents hydrogen or an alkyl group with 1-4 C atoms which is optionally substituted by a nitrile, carbonamide or carboxyl group.

The dyestuffs of the formula (I) are manufactured by diazotising amines of the formula wherein R R and m have the above-mentioned meaning, and reacting the product with amines of the formula a -1s-unz (VII) (VIII) s0 -NH-s0 -R diazotising the monoazo dyestuffs thus obtained, after splitting off the group Z, if necessary, by alkaline or acid saponification, and coupling the product with indoles of the formula wherein R R R and n have the above-mentioned meaning. As examples of suitable disulphimides of the Formula (VI) there may be mentioned: (3-aminobenzenesulphonyl)-benzenesulphonamide, (El-amino- 4-chlorobenzenesulphonyl)-benzenesulphonamide, (3- amino-benzenesulphonyl )-methanesulphonamide, (3- amino-benzenesulphonyl )-propanesulphonamide, (3- amino-benzenesulphonyl )-butanesulphonamide, (3-

amino-benzenesulphonyl)-p-t0luenesulphonamide, (3- amino-benzenesulphonyl)-o-toluenesulphonamide, (3- amino-4-chlorobenzenesulphonyl)-ptoluenesulphonamide, (3-amino-4-chlorobenzcnesulphonyl)-methanesulphonamide, (3-amino-4- chlorobenzenesulphonyl)-butanesulphonamide, (3- amino-4-chlorobenzenesulphonyl)-otoluenesulphonamide, methylbenzenesulphonyl)-benzenesulphonamide, amino-6-methylbenzenesulphonyl)- butanesulphonamide, (3-amino-6-methylbenzencsulphonyl)-methanesulphonamide, (3-amin0-6- methylbenzenesulphonyl)-p-toluenesulphonamide, (3- amino-6-methylbenzenesulphonyl)-otoluenesulphonamide,

(3-amin0-6- (3-amino-4- methylbenzenesulphonyl)-benzenesulphonamide, (3- amino-4-methylbenzenesulphonyl)-ptoluenesulphonamide, (3-amino-4- benzenesulphonyl)-benzenesulphonamide, (3-aminoo-ethyl-benzenesulphonyl)-p-toluenesulphonamide, (3amino-6-ethyl-benzenesulphonyl)- methanesulphonamide, (3-amino-4 ethylbenzenesulphonyl)-benzenesulphonamide, (3-aminoo-ethoxy-benzenesulphonyl)-benzenesulphonamide, (3-amino-6'ethoxy-benzenesulphonyl)-p toluenesulphonamide, (3-amino-6-chlorobenzenesulphonyl)-benzenesulphonamide. (3-amino 6-chloro-benzenesulphonyl)-p-toluenesulphonamide, (3-amino-6-chloro-benzenesulphonyl)-otoluenesulphonamide, (4-amino-benzenesulphonyl)-ptoluenesulphonamide, (4-amino-benzenesulphonyl)-otoluenesulphonamide, (4-amino-benzenesulphonyl)- methanesulphonamide, (4-amino-benzenesulphonyl)- butanesulphonamide, (3-amino-4-bromobenzenesulphonyl)-benzenesulphonamide, (3-amino- 4-bromo-benzenesulphonyl)-p-toluenesulphonamide, (3-amino-4-bromo-benzenesulphonyl)-otoluenesulphonamide, (3-amino-4-bromo-benzenesulphonyl)-methanesulphonamide, (3-an3ino-4-bromobenzenesulphonyl)-butanesulphonamide (2-amino-3- chloro-4-methyl-benzenesulphonyl)- benzenesulphonamide, (2-amino-3-chloro-4-methoxybenzenesulphonyl)-benzenesulphonamide, (3-amino- 4-chloro-5-methylbenzenesulphonyl)- benzenesulphonamide, (3-amino-5-chloro-6-methyl benzenesulphonyl)-benzenesulphonamide, (El-amino- 5-chloro-6-methyl-benzenesulphonyl)- methanesulphonamide, (4-amino-5-chlorobenzenesulphonyl)-benzenesulphonamide, (4-amino- 3-chloro-benzenesulphonyl)-methanesulphonamide, (4-amino-5-methyl-benzenesulphonyl)- methanesulphonamide, (4-amino-5-methylbenzenesulphonyl)-benzenesulphonamide and (3- amino-benzenesulphonyl)- dimethylaminosulphonamide.

Suitable middle components of the formula (VII) are, for example: aniline, Z-aminotoluene, 3- aminotoluene, 2amino-ethylbenzene, 3-aminoethylbenzene, 3-chloroaniline, 3-bromoaniline, 2- aminoanisole, 3-aminoanisole, 2-amino- B-(2-phenylindolyl-l )-propionic acid amide, B-( Z-methylindolyLl )-propionic acid, B-(Z-methylindolyl-l )-propionic acid, 2-,8- naphthylindole, Z-p-biphenylylindole, 2,5-

2,4-dimethyl-7-methoxyindole, 2-methyl-5-ethoxyindole, 2-methyl-6-chloroindole, 2methyl-5-nitroindole, 2-methyl-5-cyanoindole, 2-methyl-7-chloroind0le, Z-methyl-S-fluoroindole, 2-methyl-5bromoindole, 2-methyl-5,7-dichloroindole, l-B-cyanoethyl-2,6-dimethylindole, and Z-phenylindole-5-sulphonic acid l-methyl-2- phenylindole-S-sulphonic acid.

dimethylindole, 2phenyl-5-ethoxyindole, 2-methyl-5-chloroindole,

and

The indole-sulphonic acids are manufactured by sulphonation of 2-alkyl-indoles or 2-aryl-indoles in accordance with the process described in German Pat, specification No. 137,117, wherein the sulphonic acid group probably enters the 5-position.

The diazotisation of the amines of the formula (VI) is carried out in accordance with methods which are in themselves known, preferably in aqueous solution containing mineral acid, using sodium nitrite. The coupling of the diazonium compounds of the amines of the formula (VI) with the coupling components of the formula (VII) can be carried out in accordance with processes which are in themselves known, for example in a neutral to strongly acid, but preferably in a weakly acid, pH range, in an aqueous or aqueous-organic medium.

The monoazo dyestuffs of the formula (VIII) are isolated in accordance with known methods, for example by filtration or by salting-out by means of a salt which is soluble in aqueous solution, for example by means of NaCl or KCl, and subsequent filtration. If coupling components of the formula (VII) with Z SO I-I or -CH -SO H are employed, isolation of the monoazo dyestuffs is frequently only required after the liberation of the amino group of the coupling component, effected by alkaline or acid saponification. An intermediate isolation of the monoazo dyestuffs, however, is not always necessary they can also be diazotised further without being isolated.

The further diazotisation of the aminoazo dyestuffs (VIII) with Z H can, for example, be carried out in an acid, aqueous dispersion by means of sodium nitrite solution, and the diazotisation temperatures can be between 0 and 30C. Aminoazo dyestuffs of the formula (VIII) with Z H can furthermore also be diazotised indirectly by dissolving them under alkaline conditions, adding sodium nitrite solution and pouring the mixture into aqueous hydrochloric acid, or adding hydrochloric acid.

The coupling of the diazotised aminoazo dyestuffs (VIII) with the end components (IX) to give the disazo dyestuffs (I) is also carried out in a manner which is in itself known, for example in a neutral, weakly acid or strongly acid aqueous medium, or in an aqueousorganic medium. The disazo dyestuffs of the formula (I) are generally rather sparingly soluble in an acid medium and can be isolated by simply filtering them off, if necessary after addition of sodium chloride. If the dyestuffs are obtained in an impure form, they can be recrystallised in a known manner from hot water, if necessary with addition of alkali. The more sparingly soluble dyestuffs (I) which are isolated under acid conditions can be rendered easily soluble in water by mixing them with salts of strong bases and weak acids, for example trisodium phosphate, disodium hydrogen phosphate, sodium tetraborate, sodium metaphosphate, sodium metasilicate or sodium carbonate.

The new dyestuffs of the formula (I) can be isolated, or be present, or be employed further, in the form of the free acid or of alkali metal salts or ammonium salts. Suitable alkali metal salts, in which the hydrogen atom of the -NH-group is thus replaced by an alkali metal and polyamide, such as poly-e-caprolactam or the reaction product of hexamethylenediamine with adipic acid. The dyeings obtained, especially those on polyamide materials are distinguished by good fastness properties, especially by good fastness to wet processing and good fastness to light. The neutral absorption and the combination behaviour with other suitable dyestuffs for this material are also good. The dyestuffs of the formula (1) are employed either in the form of the free acid or as the alkali or ammonium salt.

In the examples which follow, parts denote parts by weight and percentages denote percentages by weight.

EXAMPLE 1 34.6 parts of (3-amino-4chloro-benzenesulphonyl)- benzenesulphonamide are dissolved in 200 parts of water with the addition of 10 percent strength sodium hydroxide solution, and treated with 7.7 parts of sodium nitrite. The solution thus obtained is run into 200 parts of ice/H O and 35 parts of concentrated hydrochloric acid and is diazotised in 0.5 hour at 5C; the excess nitrous acid is thereafter removed by means of amidosulphonie acid and the diazonium salt suspension is run into a solution of 21 parts of anilinomethanesulphonic acid and 9 parts of sodium bicarbonate in 100 parts of water, at 0-5C, and the pH is'kept at between 6 and 8.5 by further addition of sodium bicarbonate. After completion of coupling, the product is salted-out with sodium chloride, filtered off and washed with saturated sodium chloride solution. The moist dyestuff paste is stirred for 1 hour in 200 parts of 7 percent strength sodium hydroxide solution at 80-90. After the splitting off of the sulphomethyl group is complete, the dyestuff is precipitated by adding sodium chloride, filtered off, washed with saturated sodium chloride solution and dried in vacuo at 50. 45 parts of the monoaminoazo dyestuff thus obtained are dissolved in 500 parts of water, 7.5 parts of sodium nitrite are added, the dyestuff is diazotised by pouring into 1,000 parts of water and 30 parts of concentrated hydrochloric acid at 1020 over the course of minutes, and thereafter the excess nitrous acid is destroyed with amidosulphonic acid. The diazonium salt suspension thus obtained is run at 10-20 into a solution of 20.7 parts of 1-methy1-2-pheny1-indole in glacial acetic acid. The mixture is slightly buffered with sodium acetate. After completion of coupling, the disazo dyestuff is isolated by filtration. The dyestuff corresponds to the formula 1t dyes polyamide, from a weakly acid or neutral bath, in a yellowish-tinged scarlet. The dyeings show good fastness properties.

DYEING EXAMPLE 0.1 g of the dyestuff is dissolved in 100 ml of hot water, 5 ml of 10% strength ammonium acetate solution are added and the mixture is diluted to a volume of 500 ml with water. 10 g of polyamide fibres are introduced into the dyebath, the dyebath is brought to the boil over the course of 20 minutes, 4 m1 of 10 percent strength acetic acid are added and the whole is kept at the boil for 1 hour. The fibres are then rinsed and dried at -80C.

EXAMPLE 2 parts of (3-amino-4-chloro-benzenesulphonyl)- methanesulphonamide are dissolved in 700 parts of water with the addition of 10 percent strength sodium hydroxide solution, 22 parts of sodium nitrite are added and the mixture is diazotised by pouring into 300 parts of ice/water and parts of concentrated hydrochloric acid at O-5. After completion of the diazotisation, an excess of nitrous acid is destroyed with amidosulphonic acid. The diazonium salt suspension is run, at 0-5, into a solution of 44 parts of 3-amino-4-methoxytoluene in 30 parts of concentrated hydrochloric acid and 400 parts of water. The mixture is slowly buffered by adding sodium acetate solution. After completion of coupling, the product is filtered off, washed with saturated sodium chloride solution and dried. 43 parts of the monoazonoazo dyestuff thus obtained and dissolved in 500 parts of water, mixed with 7.5 parts of sodium nitrite and diazotised by pouring into 200 parts of water/ice and 30 parts of concentrated hydrochloric acid at 10l 5C over the course of 30 minutes. Thereafter, the excess nitrous acid is removed by means of amidosulphonic acid. The diazonium compound thus obtained is allowed to run into a solution of 20.7 parts of l-methyl-Z-phenyl-indole in glacial acetic acid and the mixture is thereafter slightly buffered with sodium acetate. After completion of coupling, the disazo dyestuff is isolated by filtration. The dyestuff corresponds to the formula It dyes polyamide, from a weakly acid or neutral bath, in bluish-tinged red shades of good fastness properties.

EXAMPLE 3 314 parts of (3-amino-benzenesulphonyl)- benzenesulphonamide are dissolved in 2,000 parts of water with the addition of 70 parts of 40 percent strength sodium hydroxide solution, and 69 parts of sodium nitrite are then added. The solution thus obtained is introduced dropwise, at 03C, into a mixture of 1,000 parts of ice and 400 parts of 37 percent strength hydrochloric acid. After completion of the dropwise addition, the mixture is stirred for a further 30 minutes, an excess of nitrous acid is removed with amitlosulphonic acid, and the mixture is then introduced, at with a little water and dried. Thedyestuff corresponds O-5C, into a solution of 140 parts of 3-amino4- to the formula methoxy-toluene in 2,000 parts of water and 100 parts A of 37 percent strength hydrochloric acid. The mixture is then neutralised to pH 4- 5 with approx. 300 parts of 5 OCH 40 percent strength sodium hydroxide solution. The 3 coupling is complete after approx. 3 hours. The N=N H aminoazo dyestuff is filtered off and twice washed with approx. 3 percent strength hydrochloric acid. It is dissolved in 3,000 parts of water, with the addition of con- CH 0 centrated sodium hydroxide solution at pH 8, 69 parts 2 2 of sodium nitrite are added and the solution thus obtained is run into a mixture of 1,000 parts of ice and 300 parts of 37 percent strength hydrochloric acid. It dyes polyamide in bluish-tinged red shades of good Hereupon, the sparingly soluble diazo compound prefastness properties.

cipitates. After removing an excess of nitrite with If the procedure indicated in the preceding examples amidosulphonic acid, the suspension of the diazo comis followed and the starting components, middle compound is introduced into a solution of 193 parts of 2- ponents and end components indicated in the table phenyl-indole in glacial acetic acid. After completion below are used, further disazo dyestuffs of the general of coupling, the disazo dyestuff is filtered off, washed formula (I) are obtained.

Example Starting Component Middle Component End Component 4 (3-Amino-benzencsulphony])- Aniline Z-Phenyl-indole benzenesulphonamide 5 do. do. l-Methyl-2-phenyl-indole 6 do. do. l-flCyanoethyl-Z-phenyl-indole 7 do. do. Z-Methyl-indolc 8 do do. Z-Phcnyl-indole-S-sulphonic acid 9 do. do. 2.6-Dimethyl-indolc lo do. do. Z-Methyl-5-chloro-indole l 1 do. do. B-(2-Phenylindolyl-l )-propionic acid amide l2 do. 3-Amino-toluene 2Methyl-indole 13 do. do. Z-Phenyl-indole 14 do. do. lMethyl-Z-phenyl-indole 15 do. do. l-BCyanoethyl-2-phenyl-indo|e 16 do. do. Z-MethyLS-chloro-indole 17 do. do. 2-Metl1yl-7-chloro-indole 18 do. do. I B-Cya noethyl-Z-methyl-indole 19 do. 3-Amino-4- l-,8-Cyanoethyl-Z-phenyl-indole methoxy-toluene 20 do. do. 2,5-Dimethyl-indole 21 do. do. Z-Phenyl-indole-S-sulphonic acid 22 do. do. l'Methyl-2phenyl-6-bromo-indole 23 do. do. 2-Methyl-7-chloro-indole 24 do. do. l-,B-Cyanoethyl-2,6-dimethyl-indole 25 do. do. B-(IZ-Phenylindolyl-l )-propionic acid amide 26 do. do. l-Methyl2-phenyl-indol 27 do. do. Z-Methyl-indole I 28 do. 3-Amino-anisole 2-Phenylindole 29 do. do. 2-Methyl-indole 30 do. do. l-Methyl-Z-phenyl-indole 3] do. do. l-B-Cya noethyl-2-phenyl-indole 32 do. do. l-B-Cyanoethyl-2-methyl-indole 33 do. do. Z-Phenyl-indole-S-sulphonic acid 34 do. do. 2,5-Dimethyl-indole 35 do. do. Z-Methyl-5-chloro-indole 36 do. Z-Amino-toluene Z-Phenyl-indole 37 do. do. Z-McthyI-indole 38 do. do. l Methyl-2phenyl-indo|e 39 do. do. l-BCyanoclhyl-l phcnyl-indole 40 do. do. Z-Mcthyl-7-chloro-indolt: 4] do. do. lfi-Dimethyl-iudole 42 do. 3 Amino-cthyl- Z-Phcnyl-indolc benzene 43 do. do. 2Mcthyl-indolc 44 do. do. l-Methyl 2-phenyl indole 45 do. do. l-B-Cyanoethyl-Z-phenyl-indole 46 do. do. 2-Phenyl-indole-S-sulphonic acid 47 do. Z-Amino-ethyl- Z-Phenyl-indole benzene 48 do. do. Z-Methyl-indole 49 do. do. l-Methyl-2-phenyl-indole 50 do. do. 2-Methyl-5-chloro-indole 51 do. do. 2,5-Dimethyl-indole 52 do. do. 2-Methyl-7chloro-indole 53 do. do. Z-Phenyl-indole-S-sulphonic acid 54 do. do. B-(Z-Phenyl-indolyl-l )-propionic acid amide 55 do. Z-Amino-anisole 1B-CyanoethylQ-phenyl-indole 56 do. do. 2-Phenyl-indole 57 do. do. Z-Methyl-indole 58 do. do. 2.5-Dimethyl-indole 59 do. 3-Chloro-aniline Z-Phenyl-indole 60 do. do. Z-Methyl-indolc 61 do. do. l-Methyl-2-phenyl-indole 62 do. do. l-B-Cyanoethyl-2-phenylindole Continued Example Starling Component Middle Component End Component 63 do. 3-Bromo-aniline LMethyl-Z-phenyl-indole 64 do. do. Z-Phenyl-indole 65 do. do. Z-Methyl-indole 66 do. 3-Amino-ethoxy- 2-Phenylindole benzene 67 do. do. l-Methyl-Z-phenyl-indole 68 do. do. l-fi-Cyanoethyl-Z-phenyl-indole 69 do. do. Z-Phenyl-indole-S-sulphonic acid 70 do. do. 2-Methyl-7-chloro-indole 71 do. do. Z-Phenyl-S-nilro-indole 72 do. l-Amlno-2,3dimethyl- Z-Phenyl-indole benzene 73 do. do. Z-Methyldndole 74 do. do. LMethyl-Z-phenyl-indole 75 do. l-Amino-2,5-dimelhyl- Z-Phenyl-indole benzene 76 do. do. l-Methyl-2-phenyl-indole 77 do. do. l-B-Cyanoethyl'2-phenyl-indole 78 do. do. 2,5-Dimethyl-indole 79 do. 2-Amino-4-methoxy- Z-Phenyl-indole toluene 80 do. do. l-Methyl-2-phenyl-indole 81 do. do. 2-Methyl-indole 82 do. do. l-B-Cyanoethyl-Z-phenyl-indole 83 do. do. B-( 2-Phenylindolyl-l )-propionic acid amide 84 do. Z-Amino-l ,4-dime thoxy- 2-Methyl'indole benzene 85 do. do. Z-Phenyl-indole 86 do. do. l-Methyl-Z-phenyl-indole 87 do. do. Z-Phenyl-indole-S-sulphonic acid 88 do. do. 2,5-Dimelhyl-indolc 89 do. do. 2-Methyl-7-chloro-indole 90 do. aNuphthylamine Z-Phenyl-indole 9l do. do. l-Methyl-2-phenyl-indole 92 do. do. 2-Methyl-ind0le 93 do. do. l-B-Cyanoethyl-Z-phenyl-indole 94 do. do. fi-(Z-Phenyl-indolyld )-propionic acid amide 95 do. do. 2-Phenyl-indole-S-sulphonic acid 96 do. 2-An1ino-l.4-dielhoxy l -B-Cynnoethyl-2-phenyl-indole benzene 97 do. do. Z-Phenyl-indolc 98 do. do. Z-Methyl-indole 99 do. do. l-Methyl-Z-phcnyl-indole 100 do. do. Z-Melhyl-S-chloro-indole 101 do. 2-Amino-4-etho xy- 2-Phenyl-indole toluene 102 do. do. Z-MethyI-indole 103 do. do. l-Methyl-2-phenyl-indole I04 (4-Amino-ben zenesul- Aniline Z-Phenyl-indole phonyl)-benzenesulphonamide 105 do. do. l-Methyl-Z-phenylindolc I06 do. do. 2-Methyl-indole l07 do. do. l-B-Cyanoethyl2-phenyl-indole 108 do. 3-Amino-toluene Z-Phenyl-indolc-5-sulphonic ucid l09 do. do. Z-Phenyl-indole 1 10 do. do. l-MethyI-Z-phenyl-indole l l I do. do. Z-MethyI-indole 1 12 do. do. l-B-Cyanoethyl-Z-phenyl-indolc 1 13 do. 3-Amin0-4'methoxy- 2-Phenyl-indole toluene l l4 do. do. l-Methyl-2-phenyl indole 1 15 do. do. Z-Methyl-indolc l lo do. do. l-B-Cyz1noethyI-Z-phcnyl-indole l l7 do. do. 2-Phenyl-indole-S-sulphonic acid I l8 do. Z-Amino-l .4-di- LPhcnyl-indolc methoxy-henzcne l 19 do do. l-Methyl-2-phenyl-imlolc I20 do. do. Z-MethyHndoIe lZl do. do. l-fl-Cyunoethyl-Z-phcnyldndolc I22 B-Amino-unisolc Z-Phcnyl-indole I23 do. do. l-Mcthyl-2-phcnyl-iml()le I24 do do. Z-Melhyl-indole I25 do. do. l-fl-Cyunocthyl-Z-phenyl-indole I20 do. do. Z-Phenyl-indolc-5-sulphonic ucid I27 do. do. 2,5-Dimcthyl-indolc I28 do. 2-Amino-l.4-di- 2-Phenyl-indole ethoxy-benzene l 29 do. do. 2-Methyl-indole do. do. Z-Phenyl-indole-S-sulphonic acid 13] do. do. 2,5-Dim ethyl-indole I32 do. do. lMethyl-2-phenyl-indole 133 do. do. 2-Methyl-7-nitro-indole 134 do. do. 2-PhenyI-S-niiro-indole 135 do. do. Z-Methyl-S-chloro-indole 136 do. l-Amino-2.3-dimethyl- 2Phenyl-indole benzene 137 do. do. 2-Methyl-indole 138 do. do. l-Melhyl-l-phenyl-indole l 39 do. a-Naphthyl-amine 2-Phenyl-indole 140 do. do. Z-Methyl-indole l4l do. do. l-Methyl-Z-phenyl-indolc Continyed Examp1e Starting Component Middle Component End Component 142 do. do. Z-PhenyLindole-S-sulphonic acid 143 do. do. 2,5-Dimethyl-indole 144 do. do. 2-Methyl-5-ch1oro-indo1e 145 do. do. 2-Phenyl-5-nitro-indo1e 146 do. do. 1-B-Cyanoethy1-Iphenyl-indo1e 147 do. do. B-(Z-Phenylindolyld )-propionic acid amide 148 do. Z-Amino-toluene l-Melhyl-2-pheny1-indo1e 149 do. do. 2-Pheny1-indole 150 do. do. l B-Cyanoethyl-Z-phenyl-indole 151 do. 3-Amino-ethy1- 2 Pheny1-indole benzene 152 do. do. l-Methyl 2-phenyl-indole 153 do. do. 1-B-Cyanoethyl2-phenyl-indole 154 do. do. 2.5-Dimethy1-inc1ole 155 do. 2-Amino-ethyl- Z-Pheny l'indole benzene 156 do. do. l-Methyl-Z-phenyl-indole 157 do. do. Z-Methybindole 158 do. do. Z-Phenyl-indole-S-sulphonic acid 159 do. do. l-B-Cyanoethyl-2-phenyl-indole 160 do. 3-Chloro-aniline 2-Pheny1-indole 161 do. do. l-Methyl-Z-phenyl-indoie 162 do. do. Z-MethyLindole 163 do. do. 1 -fiCyanoethy1-2-pheny1-indo1c 164 do. 2-Amino-aniso1e 1-Methy1-2-pheny1indo1e 165 do. do. Z-Phenyl-indole 166 do. do. 2.5-Dimelhyl-indole 167 do. 3-Amino-elhoxy Z-PhenyHndoIe benzene 168 do. do. I-MethyLLphenyLindole 169 do. do. Z-MethyLindole 170 do. do. l-,B-Cyanoethyl-2-pheny1-indole 171 do. 1Amino-2.5-di Z-PhenyLindole methyl-benzene 172 do. do. 1-Methyl-2-pheny1-indo1e 173 do. do. l-/3-Cyanoethy1-2-pheny1-indole 174 do. do. Z-Phenyl-indole-S-sulphonic acid 175 (3-Amino-4-chloro- Aniline Z-Phenyl-indole benzenesulphonyljmelhanesulphonamide 176 do. do. I-fl-Cyanoethy1-2-pheny1-indole 177 do. do. Z-Methyl-indole 178 do. do. B-(Z-Phenylindolyl-l )propionic acid amide 179 (3-Amino-4-ch1orodo. 2,5-Dimethyl-indo1c benzenesulphonyhbenzenesulphonnmide 180 do. do. 2-Methy1-5-chloro-indole 181 do. do. Z-Pheny1-indo1e-5-sulphonic acid 182 do. do. B-(2-Phcny1indoly1-1)-propionic acid amide 183 do. 3-Amino-to1ue ne 2-Pheny1-indo1e 184 do. do. 2 Methy1-indole 185 do. do. 1-Methy1-2-phenyl-indo1e 186 do. do. 1-,BCyanoelhyl-2-phenyl-indo1e 187 do. do. 2,5-Dimethy1-indo1e 188 do. do. Z-Phenyl-S-nitro-indole 189 do. do. Z-Phenylindo1e-5-su1phonic acid 190 do. 3-Amino-4- 2Pheny1-indole methoxy-toluene 191 do. do. 1-Methy1-2-phenyl-indo1e 192 do. do. Z-Methyl-indole 193 do. do. l-B-Cyanoethyl-Z-phenyl-indole 194 do. do. [3-(2Pheny1-indo1yl-1)-propionic acid amide 195 do. do. l-Methy1-2-pheny1-6bromo-indole 196 do. do. Z-Methyl-5-chloro indole 197 do. do. 2,5-Dimethyl-indo1e 198 do. 3-Amino-anisole Z-Phenyl-indole 199 do. do. l-Methyl-Z-phenyl-indole 200 do. do. Z-Methyl-indole 201 do. do. 1-B-Cyanoethyl-Z-phenyI-indole 202 do. do. 2.5-Dimethy1-indo1e 203 do. 3-Amino-ethyl- Z-Methyl-indole benzene 204 do. do. 2 Phenyl-indo|e 205 do. do. 1-Methyl-2-phenyl-indo1e 206 do. do. 2.5-Dimethy1-indo|c 207 do. do. Z-MethyLS-chIQro-indole 208 do. do. 2-Methy1-7-ch1oro-indole "09 do. 2-Amino-ethy1- l-Methy1-2-phcny14ndolo benzene 210 do. do. Z-Phenyl-indolc 21 I do. do. Z-Mcthyldndolc 212 do. do. Z-Methyl-indo1e-5-su1phonic acid 311 do, do. 2,5-Dimcthyl-indole 214 do. Z-Amino-tolue ne l-Methyl-2-phcny1-indo1e 215 do. do. 2-Phenyl-indo1e 216 do. do. l-B-Cyanoethyl-2-pheny1-indole 217 do. do. 2-Phenyl-indolc-Ssulphonic acid 18 do. do. 2.5-Dimethy1-indo1e 219 do. do. B-(Z-Phenylindolyl-l )-propionic acid amide 220 do. 2-Amino-anisole 1-Methyl-2-phenyl-indole 221 do. do. Z-PhenyHndole Cont1nued Example Starting Component Middle Component End Component 222 do. do. 2-Methylindole 223 do. do. Z-Phenyl-indole-S-sulphonic acid 224 do. do. 2,5-Dimethyl'indole 225 do. 3-Chloroa niline Z-Phenyl-indole 26 do. do. l-Methyl-2-phenyl-indole 227 do. do. Z-Methyl-indole 228 do. do. 2-Methyl 5-chloro-indole 229 do. 3 Bromo-aniline Z-Phenyl-indole 230 do. do. Z-Methyl-indole 231 do. do. l-Methyl-2-phenyl-indolc 232 do. 3-Amino-ethoxy- Z-Phenyl-indole benzene 233 do. do. Z-Methyl-indole 234 do. do. l Methyl-2-phenyl-indole 235 do. do. l-B Cyanoethyl-2-phenyl-indole 236 do. lAmino-2,3-dimethyl- Z-Phenyl-indole benzene 237 do. do. Z-Methyl-indole 238 do. do. l-Methyl-Z-phenyl-indole 239 do. do. Z-Phenyl-indole-S-sulphonic acid 240 do. l-Amino-2,5-dimethyl- Z-MethyLindole benzene 24] do. do. Z-Phenyl-indole 242 do. do. l-Methyl-Z-phenyl-indolc 243 do. do. l-B-Cyanoethyl-2-phenyl-indole 244 do. do. 2,5-Dimethyl-indole 245 do. do. 2-Methyl-5-chloro-indole 246 do. 2-Amino-4-methoxy- Z-Phenyl-indole toluene 247 do. do. Z-Methyl-indolc 243 do. do. l-Methyl-Z-phenyl-indole 249 do. do. l-fiCyanoethyl-2-phenyl-indole 250 do. do. 2,5-Dimethyl-indole 251 do. do. Z-Phenyl-indole-S-sulphonic acid 252 do. 2-Amino-4-ethoxy- Z-Phenyl-indole toluene 253 do. do. l-Methyl-2-phcnyl-indole 254 do. do. Z-Methyl-indole 255 do. do. Z-Methyl-indole 256 do. do. 2-Phenyl-indolc'5-sulphonic acid 257 do. 2-Amino-l.4-dimethoxy- 'l-Phenyl-indole benzene 258 do. do. Z-Methyl-indole 259 do. do. l-MethyI-Z-phenyl-indole 260 do. do. l-B-Cyanoethyl-Z-phenyl-indole 26l do. do. l-Methyl-2-phenyl-indole 262 do. do. Z-Phenyl-indole 263 do. do. Z-Methyl-indolc 264 do. do. 2-McthylJwhloro-indole 265 do. do. 2,5-Dimethyl-indole 266 do. do. Z-Phenyl-indole-5-sulphonic acid 267 do. a-Naphthyl-amine Z-Phenyl-indole 268 do. do. lMethyl-l phenyl-indole 269 do. do. l-B-Cyanoethyl-2-phcnyl-indole 270 do. do. 2-Methyl-5-chloro-indole 271 do. do. Z-Phenyl-indolc-S-sulphonic acid 172 do. do. Z-Methyl-S-chloroindole 173 do. do. 2.5-Dimethyl-indolc 274 do. 3Amino-tolueno l-MethyI-Z-phcnyI-indolc-S-sulphonic acid 275 (3-Amino'benzcnedo. l-Methyl-2-phcnyI-indolc-isulphonic acid sulphonyD-hcnzenesulphonumide 276 o. Aniline l-Ethyl-2-phcnyl-indolc-S-sulphonic acid Similar dyestuffs are obtained if the middle components and end components used in Examples l-276 are employed together with the following (aminobenzenesulphonyl)-sulphonamides as starting components: (3-amino-benzenesulphonyl methanesulphonamide, (3-amino-benzenesulphonyl)- 5 propanesulphonamide, (3-amino-benze nesulphonyl butanesulphonamide, (3-amino-benzenesulphonyl)-ptoluenesulphonamide, (3-amino-benzenesulphonyl)-otoluenesulphonamide, (3-amino-4-chlorobenzenesulphonyl)-p-toluenesulphonamide, (3-amino- 60 4-chloro-benzenesulphonyl)-butanesulphonamide, (3- amino-4-chloro-benzenesulphonyl)otoluenesulphonamide, (3-amino-6-methylbenzenesulphonyl)-benzenesulphonamide, (3-amino- 6-methyl-benzenesulphonyl)-butanesulphonamide, (3- amino-6-mcthyl-benzenesulphonyl)- mcthanesulphonamide, (3-amino-6 methyl- 5O benzenesulphonyl )-p-toluenesulphonamide, (B-amino- 65 benzenesulphonyl )-p-toluenesulphonamide, (3-amino- 6-methoxy-benzenesulphonyl )-methancsulphonamidc, (3-amino-6-mcthoxy-benzcnesulphonyl butanesulphonamide, (Z-amino-benzenesulphonyl)- benzenesulphonamide, (Z-amino-benze nesulphonyl p-toluenesulphonamide, (2-amino-benzenesulphonyl)- o-toluenesulphonamide, (Z-amino-benzenesulphonyl)- methanesulphonamide, (3-amino-benzenesulphonyl)- dimethylaminosulphonamide, (4-aminobenzenesulphonyl)-diethylaminosulphonamide, (2- amino-benzenesulphonyl)-butanesulphonamide, (3-

amino-6-ethyl-benzenesulphonyl)- benzenesulphonamide, (3-amino-6-ethylbenzenesulphonyl)-p-toluenesulphonamide, (3-amino- 6-ethyl-benzenesulphonyl)-methanesulphonamide, (3- amino-4-ethyl-benzenesulphonyl)- benzenesulphonamide, (3-amino-6-ethoxybenzenesulphonyl)-benzenesulphnamide, (3-amin0- 6-ethoxy-benzenesulphonyl)-p-toluenesulphonamide, (3-amino-6-chloro-benzenesulphonyl)- benzenesulphonamide, (3-amin0-6-chlorobenzenesulphonyl)-p-toluenesulphonamide, (3-amino- 6-chloro-benzenesulphonyl)-o-toluenesulphonamide, (4-amino-benzenesulphonyl)-p-toluenesu1phonamide, (4-amino-benzenesulph0nyl)-o-toluenesulphonamide, (4-amino-benzenesulphonyl)-methanesulph0namide, (4-amino-benzenesulphonyl)-butanesulphonamide, (3- amino-4-bromo-benzenesulphonyl)- benzenesulphonamide, (3-amino-4-bromobenzenesulphonyl)-p-toluenesulphonamide, (3-amino- 4-bromo-benzenesulphonyl)-o-toluenesulphonamide, (3-amino-4-bromo-benzenesulphonyl)- methanesulphonamide, (3-amino-4-bromobenzenesulphonyl)-butanesulphonamide, (2-amin0-3- chloro-4-methyl-benzenesulphonyl)- benzenesulphonamide, (2-amino-3-chloro-4- methoxybenzenesulphonyl)-benzenesulphonamide, (3- amino-4-chloro-5-methyl-benzenesulphonyl)- benzenesulphonamide, (3-amino-5-chlor0-6-methylbenzenesulphonyl)-benzenesulphonamide, (3-amino- 5-chloro-6-methyl-benzenesulphonyl)- methanesulphonamide, (4-amino-5-chlorobenzenesulphonyl)-benzenesulphonamide, l-amino- 3-chloro-benzenesulphonyl)-methanesulphonamide, (4-amino-5-methyl-benzenesulphonyl)- methanesulphonamide and (4-amino-5-methylbenzcnesulphonyl)-benzenesulphonamide.

We claim:

1. Disazo dyestuff, the free-acid form of which has the formula in which B is 1,4-phenylene or 1,4-naphthylene;

R is phenyl; phenyl substituted with C,C -alkyl, C -C -alkoxy,halogen, nitro or cyano; C,C -alkyl; or dialkylamino with 1-6 carbon atoms in the alkyl radical;

R is chlorine; bromine; C -C -alkoxy; C C -alk0xy substituted by cyano hydroxy or phenyl; C -C alkyl; C,-C -alkyl substituted by cyano, hydroxy or phenyl;

R and R, are hydrogen; chlorine; bromine; C -C alkoxy; C C -alkoxy substituted by cyano, hydroxy or phenyl; C C -alkyl; or C C -alkyl substituted by cyano, hydroxy or phenyl;

R is C C -alkyl; phenyl; or phenyl substituted by C -C -alkyl, C C -alkoxy, halogen, cyano or nitro;

R is hydrogen, C C -alkyl; or C C -alkyl substituted by cyano, carbonamide or carboxy;

R is C C -alkyl; C,-C -alkyl substituted by cyano, hydroxy or phenyl; C c -alkoxy; C -C -alkoxy substituted by cyano, hydroxy or phenyl; halogen; nitro; sulfo; or cyano;

m is a number 0-2; and

n is a number O2.

2. Disazo dyestuff of claim 1 in which Disazo dyestuff of claim 1 in which is 8. Dyestuff of claim 1 of the formula 9. Dyestuff of claim 1 of the formula and R and R are H.

6. Disazo dyestuff of claim 1 in which B is 10. Dycstuff of claim 1 of the formula R, is phenyl; phenyl substituted by C,-C -alkyl, 3: ET=Il/ C C -alkoxy, halogen, cyano or nitro; or C -C I 5 alkyl;

R is hydrogen, chlorine, bromine, methoxy, ethoxy, 5O 1;H..s0 I H methyl or ethyl;

R and R are hydrogen; R is methyl or phenyl; ll. Dyestuff of claim 1 of the formula R is C,C -alkyl or C,-C -alkyl substituted by cyano,

carbonamide or carboxyl;

mis l; and Cl n is 0. 7. Dyestuff of claim 1 of the formula H 3 Ll=N- NH SO -NHSO SO -NH-S0 

1. DISAZO DYESTUFF, THE FREE-ACID FORM OF WHICH HAS THE FORMULA
 2. Disazo dyestuff of claim 1 in which
 3. Disazo dyestuff of claim 1 in which
 4. Disazo dyestuff of claim 1 in which
 5. Disazo dyestuff of claim 1 in which B is
 6. Disazo dyestuff of claim 1 in which B is
 7. Dyestuff of claim 1 of the formula
 8. Dyestuff of claim 1 of the formula
 9. Dyestuff of claim 1 of the formula
 10. Dyestuff of claim 1 of the formula
 11. Dyestuff of claim 1 of the formula 